test: inference-testing fakes, e2e retry, base64 and live suites (CL-9107)

Units shrink to index placement, short reply, and base64 decode, driven
by @intx/inference-testing instead of hand-rolled fetch/scheduler fakes.
tests/ adds a 429-then-200 retry on the harness clock and a 401 that
does not retry, a base64-vs-float check over a real HTTP stub, and a
live /v1/embeddings round trip that skips when no server is reachable.

Also closes CL-9132, CL-9114, CL-9116, CL-9137.

Author: TheGreatAxios

.github/workflows/ci.yml

@@ -21,8 +21,8 @@ jobs:
           bun-version: latest
       - run: bun install --frozen-lockfile
       - run: bunx tsc --noEmit
-      - run: bun test ./src
-      - run: bunx prettier --check src
+      - run: bun run test
+      - run: bunx prettier --check src tests
       - run: bun run build
       - name: Import packed dist with Node
         run: |

IMPLEMENTATION.md

@@ -102,8 +102,13 @@ package depends only on the published surface).
 
 ## Tests
 
-`bun run test` is `bun test ./src`. Coverage is the client contract: empty
-input, URL and body knobs, auth header presence, batch split and order,
-`batchSize` rejection, malformed / short / duplicate-index replies,
-index-not-position placement, 429 retry, 401 abort, `probeEmbedDims`,
-overridable `Retry-After`.
+`bun run test` runs `bun test ./src ./tests`.
+
+- `src/embed.test.ts` — units on `@intx/inference-testing` fakes: index
+  placement across batches, short reply, base64 decode.
+- `tests/retry.test.ts` — 429 retried once after `Retry-After` on the
+  harness clock; 401 rejects without retry.
+- `tests/base64.test.ts` — `base64` and `float` agree over a real HTTP stub.
+- `tests/live.test.ts` — round trip against a real `/v1/embeddings`
+  (`EMBEDDING_E2E_BASE_URL`, default local Ollama; `EMBEDDING_E2E_MODEL`,
+  default `nomic-embed-text`). Skips when unreachable.

package.json

@@ -17,7 +17,7 @@
     "build": "tsc -p tsconfig.build.json",
     "prepack": "bun run build",
     "typecheck": "tsc --noEmit",
-    "test": "bun test ./src",
+    "test": "bun test ./src ./tests",
     "format": "prettier -w ."
   },
   "dependencies": {